Perturbative and nonperturbative aspects of neutrino oscillations in quantum field theory

TL;DR

This paper reviews two quantum field theory approaches to neutrino oscillations, comparing non-perturbative and perturbative methods to deepen understanding of neutrino flavor mixing.

Contribution

It provides a comprehensive pedagogical comparison of non-perturbative and perturbative quantum field theoretical frameworks for neutrino oscillations.

Findings

Clarifies the differences between the two approaches

Highlights the advantages of each method in describing neutrino mixing

Provides insights into the theoretical foundations of neutrino oscillations

Abstract

In this work, we present a comprehensive and pedagogical review of two quantum field theoretical approaches to neutrino flavor mixing and oscillations: the non-perturbative flavor Fock space formalism and the perturbative interaction picture framework.